import java.util.Scanner;

public class whileLoop {
    public static void main(String[] args)
    {

        Scanner sc=new Scanner(System.in);
        int x= sc.nextInt();
        int n= sc.nextInt();
        while(x<=n)
        {
            System.out.println(+x);
            x++;
        }
        System.out.println("End of while loop...");
    }
}
